Year Number 2006 14000 2007 22000 2008 36000 2009 44000 2010 40000 2011 51000 2012 58000 2013 79000 2014 60000 2015 61599.9984741211 2016 65599.9984741211 2017 73900.0015258789 2018 74599.9984741211 2019 74800.0030517578